Huawei Airbridge cBTS3612 Maintenance Manual page 31

On-site Maintenance Manual
Airbridge cBTS3612 CDMA Base Station
II.
Clock failure
After the BTS successfully establishing the OML, the BSC will
release relevant configuration data. At this time some of the boards
in the BTS will require correct clock signals to start up properly. As a
result, for the initialization failure occurring after the BSC releases
the configuration, we need to check the following:
Whether the BTS clock signal is correct.
1)
Whether the clock output of the BCKM is correct.
2)
3) Whether the connection between the BCKM and the GPS
antenna is secure.
4) Whether the number of the locked satellites is more than 4.
For the above 1) and 2), please refer to "3.4
Clock Module (BCKM)" for handling advice, for 3), please refer to
"3.12 Satellite Antenna and Feeder". The 4) may be affected by the
geographic location, if the GPS satellites are found to be less than 4,
the BTS may not be able to receive reliable clock signals.
III.
Incorrect BCPM data configuration
BCPM configuration errors will also lead to the BTS initialization
failure, thus we should carefully check each of the parameters, such
as the BCPM ID, cell parameters and chip parameters, etc.
Reconfigure those parameters if necessary.
IV.
Incorrect BTRM data configuration
BTRM data configuration error may also lead to the BTS
initialization failure, thus we need to carefully check each of the
Chapter 2 General Fault
2-12
Processing
BTS Control &